What must N288DS wait to do until 3 minutes after AAL432 rotates?

• A. Start takeoff roll
• B. Touchdown
• C. Change altitude
• D. Depart the runway

Answer: (B)

N288DS must wait to touchdown until 3 minutes after AAL432 rotates due to the standard wake turbulence separation procedures that are in place to ensure safety during aircraft operations, particularly when a large aircraft (like AAL432, which is likely a commercial airliner) has recently taken off.

When a heavy or large aircraft rotates and begins its climb, it generates a substantial amount of wake turbulence, which can be hazardous to smaller aircraft following closely behind or landing on the same runway. To mitigate the risk of encountering this powerful turbulence, smaller aircraft such as N288DS are required to maintain a safe interval before performing their landing maneuvers. The 3-minute wait ensures that any residual wake turbulence has dissipated sufficiently, allowing for a safer approach and landing that minimizes the risk of loss of control due to the effects of wake turbulence.

The other choices in this scenario, such as starting the takeoff roll, changing altitude, or departing the runway, do not specifically align with the safety procedures aimed at managing wake turbulence associated with the timing of AAL432's activities. Thus, waiting to touchdown is the most critical consideration in this context.